PNB 2250 Exam 1 Questions And Answers
Plant specific cell to cell connections ANS plasmodesma
animal specific cell to cell connections ANS tight junctions
What systems are able to exist because of multicellularity? ANS Control systems and distribution
What organisms have the highest nu...
PNB 2250 Exam 1 Questions And Answers
Plant specific cell to cell connections ANS plasmodesma
animal specific cell to cell connections ANS tight junctions
What systems are able to exist because of multicellularity? ANS Control systems and distribution
What organisms have the highest number of genes? ANS Plants
Why is the fossil record incomplete? ANS loss of soft tissue and DNA
What is the extant ancestor to animals? ANS Choanoflagellate
What traits do choanoflagellates have that are similar to animals? ANS animal specific genes,
cell adhesion, and signal pathways
analogous structures ANS similarities among unrelated species that result from convergent
evolution
Entropy ANS 2nd Law of Thermodynamics; system stability requires energy input
what is the single most important physical factor? ANS entropy
Characteristics of CHONPS ANS two or fewer electron shells, strong intramolecular bonds,
double and triple bonds, maintenance of structure
ATP ANS universal form of energy
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